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Diving Into High Concentration of Egcg: Assessing Its Effects on Mir‑34 and Mir‑93, Psa, and Ar Expression in Prostate Cancer Lncap Cell Line Publisher

Summary: Research suggests EGCG may alter miR-34a and miR-93 expressions in prostate cancer cells. Caution needed: impacts on normal cells could be significant. Is this a step toward safer cancer therapies? #ProstateCancer #EGCG

Mokhtari H ; Ebrahimi A ; Bahavar P ; Bagheri M ; Eavazi M ; Banihashemi S ; Malekzadegan Y ; Barartabar Z
Authors

Source: Advanced Biomedical Research Published:2025


Abstract

Background: Increased miR‑93 and decreased miR‑34a expressions have been shown in prostate cancer (PC). Prostate‑specific antigen (PSA) and androgen receptor (AR) exert a significant role in the onset and progression of PC. This research tried to investigate the effect of EGCG on the expression of miR‑34 and 93 and the expression of PSA and AR in PC cell lines. Materials and Methods: The effect of 5, 20, and 40 µg/ml concentrations of EGCG on the expression of miR‑34a and miR‑93 on the LNCaP cell line was evaluated through RT‑PCR. LNCaP cells were treated with a miR‑34a mimic and a miR‑93 inhibitor combined with 40 µg/ml of epigallocatechin‑3‑gallate (EGCG) and then assessed gene expressions using real‑time analysis. Cell migration was investigated by scratch assay. Results: At concentrations of 5 and 20 µg/ml EGCG, the miR‑34a and miR‑93 expression levels exhibited a reduction compared to the control cohort. Conversely, at a concentration of 40 µg/ml EGCG, there was a notable elevation in the expression levels of miR‑93 and miR‑34a compared to the control group. Furthermore, a combination of high concentration of EGCG with a miR‑34a mimic and miR‑93 inhibitor led to a significant change in the expression of PSA and AR in contrast to the EGCG group. Conclusion: Given the potential cytotoxicity of high concentrations of EGCG toward cancer cells and the conceivable impact on nonmalignant cells, it is imperative to approach its consumption with greater care. © 2025 Elsevier B.V., All rights reserved.
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